.mod_nav_list .nav_list .item {
    float: left;
    padding: 0 25px;
    font-size: 16px;
    line-height: 60px;
    color: white;
    cursor: pointer;
    text-decoration: none;
}
.mod_nav_list .nav_list .list_item {
    float: left;
    position: relative;
}
.mod_nav_list {
    position: relative;
    height: 60px;
    background-color: #21DEEF;
    margin-top: -35px;
}
.cf {

}

ol, ul {
    list-style: none;
}

.nav_span{
    width:82px;
    height:3px;
    display:block;
    background-color:#ff7800;
    position:absolute;
    top:60px;
    transition:all .5s;
    -moz-transition:all .5s;
    -webkit-transition:all .5s;
    -o-transition:all .5s
}